package netty.protobuf_2;

import io.netty.buffer.ByteBuf;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.util.CharsetUtil;

import java.util.Random;

public class NettyClientHandler extends ChannelInboundHandlerAdapter {
    //当通道就绪会触发
    @Override
    public void channelActive(ChannelHandlerContext ctx) throws Exception {
        int random = new Random().nextInt(2);

        MyDataInfo.MyMessage message = null;
        if (random == 0) {
            message = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DataType.StudentType)
                    .setStudent(MyDataInfo.Student.newBuilder().setId(5).setName("好学生3").build()).build();
        } else {
            message = MyDataInfo.MyMessage.newBuilder().setDataType(MyDataInfo.MyMessage.DataType.WorkerType)
                    .setWorker(MyDataInfo.Worker.newBuilder().setAge(8).setName("worker").build()).build();
        }
        ctx.writeAndFlush(message);

    }

    //有读取事件时触发
    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {

        ByteBuf buf = (ByteBuf) msg;
        System.out.println("服务器回复的消息：" + buf.toString(CharsetUtil.UTF_8));
        System.out.println("服务器的地址：" + ctx.channel().remoteAddress());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        cause.printStackTrace();
        ctx.close();
    }
}
